device under test

A Bluetooth Low Energy Development Kkit for wireless sensor applications.

Useful Links:

TI SensorTag: www.ti.com/sensortag

http://www.ti.com/tool/cc2541dk-sensor

SensorTag Quick Start Guide: http://www.ti.com/litv/pdf/swru324b

SensorTag Software: http://www.ti.com/tool/sensortag-sw

CC2541 SoC: http://www.ti.com/product/cc2541

The power supply section – TPS62730: http://www.ti.com/product/tps62730

The Meandered IFA dimensions can be found on page 4 of the SWRA117D app note.

One unverified Eagle Library here:

[code]
# ioclk.com Opensource Eagle Script
# Eagle > New Library > Execute Script
# Library script
#
# EAGLE Version 6.5.0 Copyright (c) 1988-2013 CadSoft
#
Set Wire_Bend 2;
# Grid changed to ‘mm’ to avoid loss of precision!
Grid mm;
Layer   1 Top;
Layer  16 Bottom;
Layer  17 Pads;
Layer  18 Vias;
Layer  19 Unrouted;
Layer  20 Dimension;
Layer  21 tPlace;
Layer  22 bPlace;
Layer  23 tOrigins;
Layer  24 bOrigins;
Layer  25 tNames;
Layer  26 bNames;
Layer  27 tValues;
Layer  28 bValues;
Layer  29 tStop;
Layer  30 bStop;
Layer  31 tCream;
Layer  32 bCream;
Layer  33 tFinish;
Layer  34 bFinish;
Layer  35 tGlue;
Layer  36 bGlue;
Layer  37 tTest;
Layer  38 bTest;
Layer  39 tKeepout;
Layer  40 bKeepout;
Layer  41 tRestrict;
Layer  42 bRestrict;
Layer  43 vRestrict;
Layer  44 Drills;
Layer  45 Holes;
Layer  46 Milling;
Layer  47 Measures;
Layer  48 Document;
Layer  49 Reference;
Layer  51 tDocu;
Layer  52 bDocu;
Layer  91 Nets;
Layer  92 Busses;
Layer  93 Pins;
Layer  94 Symbols;
Layer  95 Names;
Layer  96 Values;
Layer  97 Info;
Layer  98 Guide;
Description ”;

Edit ‘IOCLK-TI-ANT.sym’;
Layer 94;
Change Style continuous;
Wire  0.254 (0 10.16) (15.24 10.16) (15.24 7.62) (17.78 7.62) \
(17.78 10.16) (20.32 10.16) (20.32 7.62) (22.86 7.62) \
(22.86 10.16) (25.4 10.16) (25.4 5.08);
Layer 94;
Change Size 1.27;
Change Ratio 8;
Change Align bottom left;
Change Font proportional;
Text ‘PCB Antenna’ R0 (12.7 2.54);
Pin ‘GND’ sup none middle R90 both 0 (0 5.08);
Pin ‘FEED’ in none middle R90 both 0 (5.08 5.08);
Layer 94;
Wire  0.254 (30.48 0) (30.48 15.24) (-2.54 15.24) (-2.54 0) \
(30.48 0);

Edit ‘IOCLK-TI-ANT.pac’;
Description ‘\
PCB Small Antenna \n\
– inv.F 2.4 GHz \n\
– according to TI”s SWRA117D, Application Note AN043\n\
– ioclk.com Eagle Library’;
Layer 1;
Rect R0 (0 0) (0.9 4.9);
Layer 1;
Rect R0 (0 4.9) (5 5.4);
Layer 1;
Rect R0 (2.3 0) (2.8 4.9);
Layer 1;
Rect R0 (4.5 2.26) (5 4.9);
Layer 1;
Rect R0 (5 2.26) (7 2.76);
Layer 1;
Rect R0 (7 2.26) (7.5 4.9);
Layer 1;
Rect R0 (7 4.9) (9.7 5.4);
Layer 1;
Rect R0 (9.2 2.26) (9.7 4.9);
Layer 1;
Rect R0 (9.7 2.26) (11.7 2.76);
Layer 1;
Rect R0 (11.7 2.26) (12.2 4.9);
Layer 1;
Rect R0 (11.7 4.9) (14.4 5.4);
Layer 1;
Rect R0 (13.9 0.96) (14.4 4.9);
Layer 21;
Wire  0.127 (-0.5 5.7) (14.7 5.7);
Wire  0.127 (0 0) (-0.5 0) (-0.5 5.7);
Wire  0.127 (14.7 5.7) (14.7 0) (0.1 0);
Layer 1;
Smd ‘GND’ 0.2 0.2 -0 R0 (0.4 0.1);
Layer 1;
Smd ‘FEED’ 0.2 0.2 -0 R0 (2.5 0.1);
Layer 21;
Change Size 0.6096;
Change Ratio 3;
Change Align bottom left;
Text ‘IOCLK – BLE – ANT’ R0 (3.81 1.27);
Layer 21;
Change Size 0.3048;
Change Align bottom left;
Text ‘According to SWRA117D’ R0 (3.81 0.635);
Layer 1;
Smd ‘G’ 1.27 0.635 -0 R90 (0.4 -0.57);
Layer 1;
Smd ‘F’ 1.27 0.635 -0 R90 (2.56 -0.57);

Edit ‘IOCLK-TI-ANT.dev’;
Prefix ”;
Description ‘\
PCB Small Antenna \n\
– inv.F 2.4 GHz \n\
– according to TI”s SWRA117D, Application Note AN043\n\
– ioclk.com Eagle Library’;
Value off;
Add IOCLK-TI-ANT ‘G$1’ next 0 (0 0);
Package ‘IOCLK-TI-ANT’ ”;
Technology ”;
Connect  ‘G$1.FEED’ ‘F’  ‘G$1.GND’ ‘G’;
Grid inch;

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